A subgrade soil sample was tested using standard CBR apparatus and the observations are given below - Load- kg Penetration- mm- 60 2-5- 80 5- -Assuming that the load-penetration curve is convex throughout- the CBR value

Generally, C.B.R. value at 2.5 mm penetration is higher than 5.0 mm penetration. CBR_2.5 = 601370× 100=4.38% CBR_5 = 802055× 100 = 3.89% nbsp; since, CBR_ ...

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A subgrade so...

Question

A subgrade soil sample was tested using standard CBR apparatus and the observations are given below :

$\begin{matrix} Load, kg & Penetration, mm 60 & 2.5 80 & 5 \end{matrix}$

Assuming that the load-penetration curve is convex throughout, the CBR value (%) of the sample is

2.92

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3.89

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5.84

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4.38

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Solution

The correct option is D 4.38
Generally, C.B.R. value at 2.5 mm penetration is higher than 5.0 mm penetration.

$C B R_{2.5} = \frac{60}{1370} \times 100 = 4.38 %$

$C B R_{5} = \frac{80}{2055} \times 100 = 3.89 %$

since,

$C B R_{2.5} > C B R_{5}$

$∴ CBR of soil = 4.38 %$

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A subgrade soil sample was tested using standard CBR apparatus and the observations are given below : Load, kgPenetration, mm602.5805 Assuming that the load-penetration curve is convex throughout, the CBR value (%) of the sample is

The correct option is D 4.38Generally, C.B.R. value at 2.5 mm penetration is higher than 5.0 mm penetration. CBR2.5=601370×100=4.38% CBR5=802055×100=3.89% since, CBR2.5>CBR5 ∴CBR of soil=4.38%

A subgrade soil sample was tested using standard CBR apparatus and the observations are given below :

$\begin{matrix} Load, kg & Penetration, mm 60 & 2.5 80 & 5 \end{matrix}$

Assuming that the load-penetration curve is convex throughout, the CBR value (%) of the sample is

The correct option is D 4.38
Generally, C.B.R. value at 2.5 mm penetration is higher than 5.0 mm penetration.

$C B R_{2.5} = \frac{60}{1370} \times 100 = 4.38 %$

$C B R_{5} = \frac{80}{2055} \times 100 = 3.89 %$

since,

$C B R_{2.5} > C B R_{5}$

$∴ CBR of soil = 4.38 %$